Tie cord



ug. 25, 1931. B, B, EPsTElN '1,820,868

TIE CORD Filed March 2, 1931 INVENTOR wnNl-:ssEs eyagm Epsem @gw @Mw 40ne the actual scope thereof.

45 Figure 2 is Patented Aug. 25, l1931 UNITED y sTATEs PATENT OFFICEBENJAMIN B. EPSTEIN, OF BROOKLYN, NEW YORK, ASSIGNOB, T THE LEES MANU-FACTUBING COHPANY, 0l' NEW YOBI, N. Y., A CORPORATION OFCONNECTICU T 'rmconn This invention relates generally to cordage, and has particularreference toA an improved construction of a decorative tie cord andmethod of producing the same, by virtue of which tie cords havingvarious decorative effects may be obtained by combining theseveralfelements in different ways.

Tie cords of this general nature which are used for various purposes,such as the tying of holida 'ft packa es, in the packaging w ofcandesyaiid other cofections and the like, must possess suilicienttensile strength to ac-4 complish their4 linitial purpose of tying thepackage, as well as servlng as a decoration.` It is, therefore, theprincipal object of the present invention to produce an improved tiecord of this nature, in which certain elements thereof combine to offera uniform resistance to the pulling strains' or stresses exerted '.20thereon.

' More particularly, the invention resides in an improved tie cord ofthe indicated character which possesses the requisite tensile strengthdue to the fact that certain elements of the cord, although of differentcharacters ormaterials, have approximately the same degree ofelasticity, thereby combining to simultaneously offer their unitedstrength when placed under tension.

3o Other objects of the invention reside in the comparative simplicityof` construction of the cord, the economy with which it may be producedand the general eiciency derived therefrom.

With the above recited and other objects in view, reference is had tothe following description and accompanying drawings, in which there-'areillustrated-several embodiments'of the invention while the claims de- Inthe drawings:

Figure 1 is aside 'view of a le h of tie cord constructed in accordancewit the invention. .y Y

an enlarged transverse sectional view therethrough taken' approximatlyon the line indicated at 2-2 1n Figure Figure is a view similar toFigure 1, illus- 60 trating in modified' form the invention.

in the Figure 4 is an enlar ed transverse sectional view therethrough taen approximately on the line 4-4- of Figure 3.

Referring to the drawings by characters of reference, A designatesgenerally what wlll be termed the core of the tie cord, which 1s made upof a number of strands 5 of a sultable inexpensive material, such ascotton l yarn. The core A has a covering designated generally by thereference character B, which consists of a number of strands 6 of a moreexpensive material, such as rayon. The tie cord further includes abinding designated generall by the reference character C, which i orm ofthe invention illustrated in Figures 1 and 2 is made up of a number ofstrands 7 of a suitable material, such as rayon.

In the -form of the invention illustrated in Figures 3 and 4, the bindinwhich is designated enerally by the re erence character D, is (isclosedas a flat ribbon of tinsel or any equivalent material, which may beembossed or otherwise treated to rovide a surface decoration orornamentation designated by the reference character 8.

Ineither form, the core and its covering are of different materials andare twisted in y the same direction, while the binding is spirallytwisted about thesaid core and its covering in an opposite direction sothat the covering strands 'are puffed up and away from the core strandsand maintained in this condition by the binding, to give a peculiarbulky appearance to the portions of the core covering which lic betweenthe convolutions of the binding without the necessity of-employing'agreat amount of mate. rial. This produces an attractive decorative orornamental tie cord, in which the core covering and the binding may beof 4contrasting colors or shades.

Due to the vfact that the rayon binding C or ribbon tinsel bindin Dordinarily possesses an inherently di erent de ee of elasticity withrespect to the core it follows thatunless the elasticit of theseelements is rendered approximate y equal, strains or st exerted thereonwill tend to cause the binding, which is usually the weaker of 10 thetwo, to break ahead of the cord. It is, therefore, important to overcomethis condition in order that the binding and the core may offer theiruniform strength when placed under tension and, hence, the elasticity ofone or the other is increased or decreased or both are treated so as torender-'them of approximately the same degree of lasticity during theirincorporation in the tie cord structure.

The method of roducing the tie cord includes the steps ci) twistingtogether, in the same direction, the strands of the core andsimultaneously applying at an angle the covering during the twisting ofthe core strands together,'"the core'strands being f ed` `underfatension to reduce their elasticity to the desired degree. The binding isthen applied by helically winding the same in an opposite direction tothe direction of the twist of the core and binding strands. During theapplicationof the binding, the covered core is subjected to anadditional tension while the binding is placed under a suicient tensionto equalize the elasticity of the core and binding in the finishedproduct. While the binding is being applied and twisted in an oppositedirection to that of the twist of the core and its covering, thecoveringand core are caused to slightly untwist and thus -cause the coveringstrands which are more resilient than the core Strands to puff up aboutthe core between the convolutions of the binding whereby the puffed upportion is bulkier than the periphery of the core and the outerperiphery of the helix forming the binding, while said puffed up portionstill retains a substantially solid appearance to conceal the core. Themethod thus `described may, of course, be varied and the equalization ofthe elasticity of the core and binding may be otherwise accomplished toattain the end in I view, namely, that of producing a'tie cord of thischaracter in lwhich both the core and binding have approximately thesame breaking point.

In use, when a pull is exerted on the cord in tying, the binding gripsabout the core and its covering and due to the approximate equalizationof the elasticity of the binding and core, a uniform resistance isoffered to the ulling stresses and strains so that the maximum tensilestrength is obtained. It, therefore, follows that the core and bindingwill break ata proximately the same time when the brea ing point of thecord.A is reached.

From the foregoing, it will thus be seen that a decorative tie cord hasbeen devised which in.addition to possessing the ornamental ordecorative qual-ities set forth, possesses the necessary or requisitetensile strength while permitting-of its production at a minimum cost. I

rWhat is claimed is :`l

1. A decorative tie cord including a core,

a covering therefor twisted with the core in the same direction and abinding spirally twisted about said core and covering whereby thecovering is expanded or puffed away from the core and maintained by thebinding.

2. A tie cord including a stranded` core .and

rial from the core spirally twisted about said core and its covering inanopposite direction whereby the covering is expanded or puffed awayfrom the core and-maintained by the binding, the said core and bindinghaving substantially the same degree of elasticity.

4. A tie cord including a stranded core and a stranded coveringthereforsaid core and covering strands being twisted in the samedirection and a binding extending'helically about said core and itscovering andI pitched in an opposite direction with the covering strandspued away from the core strands between the convolutions of the bindingand thus maintained by the bindin 5. A decorative tieI cord inclu ing astranded core and a stranded covering therefor, said core and coveringstrands being twisted in the same direction and a bindinghaving aninherently different degree of elasticity from the core treated torender the same of the same elasticity said binding being spirallytwisted about the core and its covering in an opposite direction wherebythe covering strands are puffed away from the core strands and thusmaintained by the binding. v

6. A method'of producing a tie cord of the character set forth includmgthe steps of twisting together, in the same direction the strands of astranded core and the strands of a stranded covering and applyingafbindingV helically around said covered core 1n' an opposite directionto the direction of the twistv .of the core and binding strands wherebysaid covering strands are expanded orf ued away from the core betweenthe convo utionsv of the binding.

7. A method character set forth including the steps of twistingtogether, in the same direction,'the strands of a stranded core and thestrands-of helically around said covered lcore inan -oppositedirectionito the direction of the twist o f the core and binding strandsand feeding the binding under a lesser tension than the flan ofproducing a tie cordof the feeding tensin of the core and covering.strands and effecting an untwisting of the core and covering strands toa limited degree and causingxthecovering strands to expand s or puff upa utthe core between the convolutions of the binding.

8. A method of producing a decorative tying cord of the character setforth including the steps of equalizing the elasticity of core l. andbinding elements having inherently different degrees of elasticity,twisting together, in the same direction, the' strands of the strandedcore and the strands of a stranded covering and applying the bindinghelically u around said covered core in an oppositieJ direction to thedirection of the twist of the core and binding strands.

9. A method of producing a decorative tying cord of the character setforth includn ing the steps of equalizing the elasticity of core andbinding elements having inherently different degrees of elasticity,twisting together, in the v4same direction, the strands of the strandedcore and the strands of a strand u ed covering and applying the bindinghelicall around said covered core in an opposite direction to thedirection of the twist of the core and binding strands and feeding saidbinding under a lesser tension than the core f 3. and coverin strands.

10. A met od of producing a tie cord of the character set forthincluding the steps of twisting together the strands of the strandedcore, applying a stranded covering helically around said core with theconvolutions pitched in the direction of the twist of the core, andapplying a binding helically around said covered core and lpitched inthe opposite direction to the direction of the twist of the coreandbinding strands, tensioning said core and binding to e ualize theelasticity thereof4 and releasing sai tension to permit the binding tobacktwist a limited degree for causing the covering strands to expand orpuf up about the core between the convolutions of the binding. 1

,- BENJAMIN B. EPSTEIN.

